Conveyer



May 2, 1933. w. w. SIBSON ET AL 6,642

CONVEYER Filed April 11, 1931 3 Sheets-Sheet 1 WITNESSES INVENTOR:

Zia 2%552? W 8y I I BY #M% W ATTORNEYS.

y 1933. w. w. SIBSON ET AL 1,906,642

CONVEYER Filed April 11, 1931 3 Sheets-Sheet 2 WITNESSES I N VEN TOR:

2172/21 9 5. Gaison May 2, 1933.

W. W. SIBSON ET AL CONVEYER 1951 s Sheets-Sheet 3 Filed A ril 11 FZG 121168012 & aZ SO12,

INVENTOR: VS

Waiier I Hen BY HGHIZE WITNESSES 6Q A TTORNEYS.

35 1 members in the manner aforementioned.

45 "scale.

Patented May 2, .1933" WALTER w. ,sIBsoN- AND HENRY n .GALsoN; OIE mururs rENNsYLvANIA,

Assrerlvons TO THE PHILADELPHIA DRYING MACHINERY COMPANY, or PHILA- fDELPHIA, PENNSYLVANIA, A CORIPQBATION or PENNSYLVANIA I coNvnm I,

, Application filed A ri1 11, 1931. Serial No. 529,370.

5? jected to treatment indrying or conditioning .machmes, and wherein a:succession of open mesh or screen sections are-individually supportedbetween'corresponding' links of apair of spaced side chains, for abilityto move '10" around guide sprockets.

In 'the main our invention is, directed toward making possible, inconveyors of the type referred to, the uniform distribution of load andworking stresses between the side chains without imposition of strainssuch as would be likely to interfere with the ready movement of theconveyors about the.

This desideratum we attain as sprockets.

fully disclosed, through provihereinafter 0 sionflof cross memberswhereby correspond-1.

ing links of the'two side [sprocket chains of the conveyors are rigidlyconnected together and which 'afiord in coaxial relation to the pivotcenters of sprocket chain links, tu-

bular portions to receiveand sustain the edges of contiguous screensections with capacity forindependent pivotal action- Our lnventionis'further concerned with structural refinements whereby the screen sec-"'tions of the conveyors are effectively reinforced without the additionof appreciable weight, and whereby they are provided, at

the same ti1ne,-with substantial edgings toen gage the connectingstress-distributing cross Other objects and attendant advantages of thisinvention'will be manifest from'the detaileddescription following takenin connection with the attached drawings, wherein Fig. I is a plan viewof a portion of an apron conveyer conveniently embodying the presentimprovements, I I

Fig. II is a fragmentary longitudinal sectional view of theconveyerdrawn toa larger,

-Fig. III is awfragmentaryiplan view of one side of the conveyer,viewedas indicated by the arrows "III III in Fig. II, and havingportions broken away orin section to ex! pose importantstructuraldetails. a FiguIV' is a fragmentary cross sectional view of the conveyertaken as indicated by the arrows-IV-IV-in Figs. 11 and III.

-Fig.- V is a perspective view showing a fragment of one of thetransverse connecting members of the conveyer.

VI is'a perspective'lview showing a modification of our invention. 1 r

Fig. VII is a detail view showing an alter native form ofcross-connecting stress-distributing member for the conveyer and,

Fig-VIII is across sectional view corresponding to Fig. IV showing afurther modification I of our invention.

these illustrations, our improved apronconveyer comprises. a pair ofspaced sprocket chains 10, which jointly support between them a seriesofscreen sections 11. The chains 10 are formedwithdouble links whereofthe outside components are indicated at 12ml the inside components at13,-the components of in-side components 13 of the chains 10 are in thisinstance made to such width as to reach well above the level of thescreen sections 11,

I see, Figs} II and IV. Thechain link compov nents 13 are moreoverextended at their ends beyond the points of interpivoting, as shown inFig. II, with assurance of ample overlap ping to preclude edge spillincident to travel of the conveyer about guide sprockets. Rotative onthe pivot pins 14 between the chain link components 12, 13 arerollers 15which are adapted to travel along horizontal angu- -lar guide rails 16,see1Figs. I and IV, so that In the form delineated in Figs. I-IV of 6the conveyor is supported against sagging under load.

Extending between corresponding links of the two chains 10, aretransverse or cross-connecting stress-distributing members 17 withtubular portions 18 engaging over the 1nwardly projecting ends of thechain link plvot pins 14, and with web portions 19 depending from saidtubular portions. As shown 1n Figs. II and IV, the cross-connectingmembers 17 just referred to are supported by angle brackets 20 which aresecured, by means of bolts 21, to laterally turned flanges 22, of the'liH-SIClO components 13 of the chain links intermediate the ends ofsaid link components. The transverse connecting members 17 are in thepresent instance split, i. e., each is composed of two counterparthalves 23, 24:, Fig. II, fashioned from sheet metal and separablyclamped together by bolts 25.

Each screen section 11 of the conveyer is made from a strip ofrelatively fine wire mesh of a width corresponding substantially to thelength of the sprocket chain links. The screen sections 11 are stiffenedby reinforcements 26 fashioned to angularly-corrugate configuration fromstout wire. These relnforcements 26 may be incorporated with the screenmesh in any convenient manner, for

example,-by inter-weaving as shown in Figs. II and IV, with theirlongitudinally aligned segments 27 forming substantial edgings for thewire mesh of the screen sections. The

.cross segments 28 of the reinforcements 26,

serve on the other hand to efiectively prevent sagging of the screenmesh between edges. From Fig. I it will be noted that the edge segments27 of the reinforcement 26 of one screen section 11 are inter-alignedwith those of the contiguous screen sections. From the latter figure andalso from Figs. II and III, it will be furthermore observed that theedge segments 27 of the reinforcements 26 of contiguous screen sectionsare engaged with capacity for independent pivotal movement within thetubular portions 18 of the trans verse connecting members 17, which, toaccommodate the cross segments 28 of the screen reinforcements, areslotted or notched at intervals as at 29, see Figs. I, III,'IV and V. Inview of the immediately foregoing and byvirtue of the fact that thecross members 17 are made of separable parts, it will be .seen that theedge segments 27 of the screen section reinforcements 26 can be readilyinserted into the tubular portions 18 of the said connecting membersincident to assembling of the conveyer. The screen sections 11 of theconveyer are thus supported mainly by the cross connecting members 17which are in turn supported from the sprocket chain links 12, 13 by theangle brackets 20. Although the tubular portions 18 ofthe conengage overthe inner ends of the link pivot pins l l of the chains no strains arecommunicated to the said pivot pins by reason of the weight carried onthe conveyer. The side edges of the wire mesh constituting the screensections 11, 1n the present instance, underlie the laterally turnedflanges 22 of the inside components of the sprocket chain links 13whercto they are secured adjacent one end by the bolts 21 whichfastenthe brackets 20, and adjacent the other ends of the links byseparate securing members 30. I

Fig. VI shows a modification of our invention in which the Wire mesh ofthe screen sections 11a of the conveyer are turned up perpendicularly asat 31 to function, in lieu of the iii-side link components of thesprocket chains of the first described embodiment, as side guards toprevent edge spill from the conveyer.

Fig. VII shows an alternative form of cross-connectingstress-distributing member 17 b fashioned from a single piece of sheetmetal. The tubular portion 18b is in this case formed as a loop with aflange 32 to abut the pendant portion 19b; and screw bolts 25. arerelied upon to clamp the said loop. For the purposes of increasedrigidity, the pendant portion 19b of the modified connecting member 17Z) is longitudinally corrugated as illustrated.

In Fig. VIII, the in-side link components 130 of the sprocket chains 100instead of being laterally flanged, as in Figs. I-III, are extendeddownward as at 33 to enable attachment of angle brackets 200 for thecross connecting members 17 c. 7

Having thus described our invention, we claim:

1. An apron conveyer comprising a pair of laterally-spaced chains;transverse-connecting stress-distributing members having tubularportions coaxial with the chain link pivots and stiffening webs pendantfrom the said tubular portions; and screen sections with reinforcementsof angular-corrugate formation affording pivot segments along theircontiguous edges engaging'within the tubular portions of the transverseconnecting members.

2. An apron convey-er comprising a pair of laterally-spaced chains;transverse-connecting stressdistributing members having tubular portionscoaxial with the chain link pivots and stiffening webs pendant from thesaid tubular portions, the said connecting members belng supported bybrackets secured to corresponding links of the two chains intermediatethe ends of the latter; and screen sections embodying reinforcements ofangular-corrugate formation affording spaced piv- V stress-distributingmemberswith tubular pornecting stress-distributing members having.

tubular portions coaxial with and engaging over inwardly projecting endsof the chain link pivot pins, and stiffening webs pendant from thetubular portions, the said'connecting members being supported bybrackets secured to corresponding links of the two chains intermediatethe ends of such links; and screen sections with incorporatedcontinuousreinforcements of rectangularly-corrugate formation affording alignedlyspaced segments along their contiguous edges pivotally engaging withinthe tubular portions of the transverse connecting members.

4. An apron conveyer comprising a pair of laterally-spaced chains;screen sectionsextending between corresponding links of the two chains,eachsaid section having a wire reinforcement of angularly-corrugateformation affording aligned pivot segments along paralleling edges; andtransverse-connecting tions adapted to receive, within them, the pivotwires along the meeting edges of contiguous screen sections, saidconnecting members being split for convenience of inserting theaforementioned pivot wires incident to assembling the conveyer.

5. An apron conveyer comprising'a pair of laterallyspaced chains; screensections extending between corresponding links of the two chains, eachsection embodying a continuous rectangularly-corrugate wirereinforcement affording aligned relatively-staggered pivot segmentsalong parallel edges; and

transverse connecting stress distributing V members with tubularportions adapted to receive, within them, the pivot wires along themeeting edges of contiguous screen sections, said connecting memberscomprising L counterpart components of sheet metal separable forconvenience of inserting'the aforementioned pivot wires incident toassembling the conveyer. Y

6. An apron conveyer comprising a pair of laterally spaced chalns;screen sections of fine wire stiffened by incorporatedrectangularcorrugate reinforcements of stout wire WIth ingstress-distributing members between correspondinglinks of the twochains, having tubular portions adapted to respectively receive withinthem, the aforementioned segments of the stiffening wires along theedges of the contiguous screen sections,-

the'said connecting members being formed of separable parts and notchedat intervals to facilitate assembling of the conveyer.

8. An apron conveyercomprising. a pair of laterally s'paced chains;screen sections of fine wire stiffened byfrectangular-corrugatereinforcementsof stout wire with the longitudinal segments of the latteralong the end edges of the screen sections; and connecting members withvtubular portions co-axial with the chain link pivots adapted to bepivotally engaged by the edge segments of thereinforcements ofcontiguous screen sections.

9. An apron conveyer comprising a pair of laterally spaced chains;screen sections of fine'wire stiffened by rectangular-corrugatereinforcements of stout wire with the longitudinal segments of thelatter along the, end

edges of the screensections, the longitudinallyextending segments of thestifiening wire along the edge of one screen section being inter-alignedwith those alongthe contiguous edge of the adjacent screensection; andconnecting stress-distributing members transversely betweencorresponding links of the two chains, the said connecting membershaving tubular portions within which the edge segments of the wirereinforcements of. con-' tiguous screen sections are engaged withcapacity for independent pivotal movement. 1

10. An apron conveyer comprising a pair oflaterally spaced chains,rectangular screen sections supported between corresponding links of thetwo chains, each said section embodying a continuouscorrugate-reinforcement with the aligning-segments providing pivotportions beyond opposing edges of the screen section, and the otheropposing edge portions of said section being upwardly-- angled relativeto the general plane of the latter to prevent spill along the sides ofthe conveyer. I s

11. An apron conveyer including screen sections individually made fromfine wire mesh stiffened from side to side by a continuous corrugatereinforcement of stout wire,

and said corrugate reinforcement having the aligning-segments thereofprojecting beyond opposingsides of the screen section to form pivotelements. I I 12. An apron conveyer including consecutive sections eachof which is made from fine wire mesh stiffened from side to side by anin-woven rectangularly-corrugated reinforcementof stout wire, and thealigning-segments of'said reinforcement projecting beyond op posingedges of the screen section in alternating relation to provide pivotelements for said 7 section.

13. An apron conveyer'comprising a'pair of laterally spaced chains; andscreen sections of fine wire mesh extending between corresponding linksof the two chains, the said screen sections being stiffened bycorrugated reinforcements of stout wire, and arranged with thereinforcement corrugations of one screen interlapping with those ofadjacent sections along meeting edges.

In testimony whereof, we have hereunto signed our names at Philadelphia,Pennsylvania, this 2nd day of April, 1931.

WALTER W. SIBSON. HENRY L. GALSON.

